Unexpected results in attempting a patch

[Tom Bullock]

>> 2.  gnucash-guide.xml:293: element xref: validity error : IDREF attribute linkend references an
>>     unknown ID "ch_oth_assets.xml"
>>
>> I have listed ch_oth_assets.xml in gnucash-guide.xml both as<!ENTITY chapter16 SYSTEM "ch_oth_assets.xml">  (given on line 19)  and also as&chapter16; (given on line 284)
>>      
> OK, this means that you’ve defined a system entity (basically, a file living on the disk) named ‘ch_oth_assets.xml’ and which can be referred to as ‘chapter16’. What you can do with this is by writing
>
>    &chapter16;
>
> at a certain point in the documentation, you can make the XML processor read in the entire contents of the file at that point. And in fact this is how the documentation is put together for all chapters, if you look at the last part of the gnucash-guide.xml file.
>
> But this won’t work with the<xref>  tag, because it uses a different way of referring to chapters.
>
> What you would do is, in your ch_oth_assets.xml file, you would have something like
>
>    <chapter id=“chapter_oth_assets”>
>      <title>Other Assets</title>
>      …
>    </chapter>
>
> Then, anywhere else in the docs, you would be able to write something like
>
>    <xref linkend=“chapter_oth_assets”/>  of this Guide.</para>
> wa
> The vital thing is that in the<xref linkend=“whatever”/>, ‘whatever’ must match the<chapter id=“whatever”>…</chapter>. That way, the correct chapter number will be put in at that point:
>
>    Chapter 16 of this guide.
>    

Yawar,

I got the "<xref linkend" tag to work! Proof was that there were no 
errors when I ran the xmllint command.

Question 1:

When I wanted to view the files in my Firefox browser I got this for the 
chapter named ch_accts.xml:

XML Parsing Error: undefined entity
Location: file:///home/tbullock/gc-docs-090510/guide/C/ch_accts.xml
Line Number 20, Column 19:

accounts. Since &app; does not impose any specific account tree layout,
------------------^

Why does it view the symbolic parameter as an entity? How have you made 
the browser resolve the parameter making symbolic substitution? Do you 
have a script that does that prior to browser display?

Question 2:

I ran "svn diff" in a terminal and the result showed what I was expecting.  I then wanted to capture the output into a file to attach to a bugzilla bug report.  I used this command:
"svn diff | patch1" thinking I was going to pipe the output into the file called patch1.  Instead I got this response:

No command 'patch1' found, did you mean Command 'patch' from package 
'patch' (main)

obviously, I am misleading ubuntu 10.4 and don't know how to pipe output 
into a new file. What should I be doing?

TIA

Tom